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I'O.UJrI "IIu; ".".."""."""""'. ~Total No. of Questions: 08] [Total No. of P~ges : 02

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"-. Paper ID [PESOS](Please fill this Paper ID in OMR Sheet) . I MAY 2[)D~

. . stM.Tech. (Sem. - 1 )

COMPUTER AIDED DESIGN AND MANUFACTURING (PE - 505)

Time: 03 Hours' Maximum Marks: 1004

. +4~K. . ;p... #liAr, (/4i

Instruction to Candidates:

1) Attempt any Five questions. MAy 2008 ,"

2) All questions carry.equal marks.

Ql) With the help of mathematical model, explain the difference between CAD/CAM and Automation. . .

Q2) (a) What is the importance of standards in CAD/CAM? .(b) How Initial Graphics Exchange .Specification (IGES) is differing from

Graphical Kernel System.(G~S)?

Q3) (a) Compare 2-dimensional and 3-dimensional wire frame models.

(b) Describe the importance of curve and surface modeling in computeraided graphics and design.

Q4) Describe brieflythe followingmethods of surfacemodelingwith two applicationexamples:

(a) Revsurf

(b) Tabcyl

Q5) What is mea~t by sweep? Discuss in detail the various types of sweeptechniques available for 3D geometric construction. .

Q6) A scaling factor of 2 is applied inYdirection and while no scaling is applied inX direction to the line whos~ end points are at coordinates (1, 3) and (3, 6).The line is to be rotated subsequently through 30° in the counter clockwisedirection. Determine the necessary transformation matrix for the operationand the new coordinates of the end points.

R-1188 [2058J RT.O.

rQ7} Differentiate between nl!illeric control (NC), computer numerical control (CNC)

and direct numerical control (DNC) systems of CAM. .

Q8} Write short note on any two of the following:,.

(a1: Fixed a~d floating zero

(b) Assembly and Tolerancing"-

(c) Operating system

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DODD

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fQ7) Differentiate between nl!l1lericcontrol (NC), computer numerical control (CNC)

and direct numerical control (DNC) systems of CAM. ..

Q8) Write short note on any two of the following:, ,

(a,"' Fixed a~d floating zero

(b) Assembly and Tolerancing

(c) Operating system

,,",

DODD

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